Acceptable methods, techniques, & practices air alterations. 
 Acceptable methods, techniques, and practices air alterations 

 - [Washington, D.C.,  1977]. 
 - v. 
<br/><br/> CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Airplanes--Maintenance and repair.
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.28:978